Old 23rd Nov 2012, 20:02
  #68 (permalink)  
Join Date: Jan 2008
Location: Reading, UK
Posts: 10,643
Dave i am genuinely interested as to your belief that Newtons second law is relevant.
Newton's Second Law can be summarised as (F)orce = (M)ass x (A)cceleration.

So in your glider example, pulling up into a climb (acceleration) is the result of a force with a vertical component (lift).

I can't really put it any more simply.
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